Another innacuracy.
14... h8g8 The only way to justify 13...Nbd7. Black is right in time to save the bishop. The idea is to play …g6-g5 and bring it back. 15. g4g5 This grants the bishop the f5-square. 15... f6h5  16. f4h2 White's plan is to play f3-e4. 16... g8h8 Great efficiency from the rook. Having done its job on the g8, it's time to go back to an open file.